/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
   
package org.apache.geode.distributed.internal;

import org.apache.geode.admin.GemFireHealth;

/**
 * Represents a thread that monitor the health of the vm it lives in.
 * @since GemFire 3.5
 */
public interface HealthMonitor {
  /**
   * Returns the id of this monitor instance. Each instance is given
   * a unique id when it is created.
   */
  public int getId();
  /**
   * Resets the current health status to zero.
   */
  public void resetStatus();
  /**
   * Returns the diagnosis of the desired status.
   */
  public String[] getDiagnosis(GemFireHealth.Health healthCode);
  /**
   * Stops the monitor so it no longer checks for health.
   * Once stopped a monitor can not be started.
   */
  public void stop();
}
